Soil Polishing Filters and Raised Percolation Areas.
Percolation Supplies percolation soil is a sand-based, engineered percolation soil designed specifically for use in percolation areas and soil polishing filters in Ireland. Our cost-effective blend delivers excellent biological treatment (adsorption), high-performance filtration, and reliable self-aeration, ensuring superior final polishing and treatment of wastewater effluent.
Unlike standard soils, this engineered percolation soil is formulated to maintain its structure and performance under all conditions. It does not lose permeability or treatment efficiency through mechanical movement, compaction, or prolonged wet weather, providing consistent long-term performance in both domestic and commercial wastewater treatment systems.
Percolation Soil – Tested & EPA Compliant
Our percolation soil is fully tested prior to delivery to ensure consistent quality and long-term performance in percolation areas and soil polishing filters.
The soil is assessed to achieve typical T/P values between 5 and 15, confirming suitability for effective wastewater infiltration and final effluent polishing.
To prevent preferential flow paths and ensure even treatment, our percolation soil undergoes mechanical sieve analysis and hydrometer testing. This guarantees the correct particle size distribution, promoting uniform infiltration, effective filtration, and stable biological treatment.
All percolation soil supplied fully complies with the EPA Code of Practice regarding the importation and use of soil in Ireland, providing confidence for designers, installers, and homeowners.
Soil Polishing Filters – Supply, Design & Installation
Soil polishing filters can be supplied, designed, and installed to suit site-specific conditions and EPA requirements.
Gravity-Fed Systems (KIT Form)
Complete gravity-fed soil polishing filter systems supplied in KIT form, including:
Perforated distribution pipework
Geotextile membrane (Geo)
Adjustable distribution boxes
All necessary fittings for efficient wastewater distribution
Pumped Discharge & LPPN Systems
Pumped discharge and LPPN (Low Pressure Pipe Network) systems are available, featuring:
Site-specific hydraulic design using USEPA orifice formulae
Even effluent distribution across the filter bed
Optimised loading rates and treatment efficiency
Maintenance, Design & Certification
Integrated flushing systems with easy access for maintenance
Full design proposals and certification provided
Colour-coded pipework for straightforward installation
Clear, easy-to-follow installation diagrams included
These systems are suitable for domestic, commercial, and institutional wastewater treatment applications, delivering reliable long-term performance and full regulatory compliance.
